THANKS SWAMPERBOB! I can't take pictures, but the edge appears to be weak and indistinct --- the alternating circles and rectangles are not well-defined and look more like a series of rectangles from the 8 o'clock to 4 o'clock position. The appears to be a grip mark like so -- //// --- from 5 o'clock to 7 o'clock. There appears to be a seam between the edge and the surface of the obverse.